Fairchild Semiconductor announced that its China-based Global Power Resource Center GPRC has developed a complete LED street lighting solution that provides high efficiency and thermal performance to increase the lifetime of street lamps.
The performance-optimized solution validates Fairchild's energy-efficiency reputation by reducing power consumption in order to meet and exceed the increasing demand for greener electronics. This demand has been driven by consumers as well as governments and regulatory standards worldwide, including China's central and provincial authorities and Energy Star's Solid-State Lighting SSL guidelines.
Fairchild's new solution features critical conduction mode CrCM PFC, high-efficiency DC-DC and constant current control. This total solution includes two sub-solutions, either parallel or serial, within the same PCB layout delivering up to 91.26 percent and 92.6 percent efficiency respectively from AC input to the LED side, under 220V input voltage.
The parallel solution features independent current regulation for each LED string. Therefore, if one string has an open circuit the other strings can still function normally. For the serial solution, independent open circuit protection for each string enables the other LEDs to still work normally even if one LED string experiences an open circuit. If an LED short circuit happens, the constant current circuits ensure all the other LEDs work normally in both parallel and series sub-solution.
In addition, Fairchild's LED lighting solutions are available for applications with output power requirements ranging from <7W up to >100W, including:
-PFC Controllers that include both standalone and PFC/PWM combo controllers as well as Critical Conduction Mode CrCM and CCM technologies, designed to increase system efficiency, reduce system noise, and offer a range of protection features for medium and high power designs.
-PWM Controllers that include standalone and solutions with MOSFETs like the Asymmetrical Half Bridge, FSFA2100, the LLC Resonant Half Bridge, FSFR2100, and the stand-alone LLC Resonant Controller, FAN7621.
-Primary-Side-Regulation PSR PWM controllers, such as the FSEZ1307, FSEZ1317 and the FAN103, that enable precise constant current CC regulation and simplified circuit design.
Fairchild's Global Power Resource Centers are a resource for system design engineers, enabling them to differentiate their designs and shorten time-to-market. The centers were established to deliver ient power management and mobile solutions targeting a range of applications.
